This excerpt taken from the PBR 20-F filed May 22, 2009.
Renewable Energy and Reduction of Greenhouse Gases (GHG)
We have also invested in a number of renewable power generation sources in Brazil including wind, solar and small hydroelectric plants. Our small hydroelectric plants have 243 gross MW of installed capacity, of which 73.4 MW is expected to become operational in 2009.
As part of our 2020 Strategic Plan, we adopted climate change guidelines to reduce GHG under the Clean Development Mechanism. Among our GHG reduction projects are the development of a wind energy plant in Northeastern Brazil, a small hydroelectric plant in Southeastern Brazil, power generation using turbo expanders at our refineries, reducing nitrous oxide emissions at our fertilizer plants and the use of waste heat for cogeneration at our refineries.
Our Internal Energy Conservation Program works to improve energy efficiency in all our units. In 2008, we avoided nearly 40 thousand tons of carbon dioxide emissions as a result of this program.